A bent handle striking wrench is a manual tool that uses the principle of leverage to turn bolts, screws, nuts, and other threaded fasteners that hold bolts or nuts in place. A curved handle tapping plum blossom wrench is usually equipped with a clamp at one or both ends of the handle to apply external force. By applying external force to the handle, the bolt or nut can be turned and held with an opening or socket. When in use, apply external force to the handle in the direction of thread rotation to turn the bolt or nut.

Bent handle impact wrenches are commonly made of carbon structural steel or alloy structural steel.

The bent handle striking wrench has working ends with hexagonal or twelve angled holes at both ends, which is suitable for situations where the working space is small and ordinary wrenches cannot be used.